CN211066181U

CN211066181U - Explosion-proof top cap and electric hot water bottle with same

Info

Publication number: CN211066181U
Application number: CN201921695181.9U
Authority: CN
Inventors: 郝玉龙
Original assignee: Beijing Smartmi Technology Co Ltd
Current assignee: Beijing Smartmi Technology Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-24
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to the technical field of electric hot water bottles, in particular to an explosion-proof top cover and an electric hot water bottle with the same, wherein the explosion-proof top cover comprises an upper cover, a middle cover and a lower cover which are arranged in a superposition way, a space is arranged between the middle cover and the upper cover as well as between the middle cover and the lower cover, the upper cover is provided with an air outlet, the middle cover is provided with a main air outlet, a first pressure relief port and a second pressure relief port, and the lower cover is provided with a first air inlet and a second air inlet; a pressing block is arranged between the middle cover and the lower cover, is positioned below the main air outlet and can move between a first position and a second position. According to the technical scheme of the utility model, can realize giving vent to anger among the top cap structure, also can realize exhausting, and no matter be giving vent to anger under the normal condition, still exhaust when empting, all have two mouths to go on simultaneously, when the inside pressure of electric hot water bottle increases suddenly, the possibility of explosion is then avoided with this partial gas discharge pressure release that can be timely.

Description

Explosion-proof top cap and electric hot water bottle with same

Technical Field

The utility model relates to an electric hot water bottle technical field especially relates to an explosion-proof top cap and have electric hot water bottle of this explosion-proof top cap.

Background

The electric thermos bottle is a popular water treatment electric appliance, and compared with a water dispenser, the electric thermos bottle has the advantages of small volume, convenient movement, no secondary pollution in water treatment and the like. At present, most of electric thermos bottles adopt a key water outlet mode, the whole electric thermos bottles tend to be of a closed structure, and an exhaust hole is generally arranged on an upper cover and used for balancing internal pressure.

In the existing electric thermos bottle, the exhaust structure of the upper cover is simple, namely the upper cover is communicated with the inside and can exhaust. The structure has the defects that if the electric hot water bottle is toppled, the pressure in the electric hot water bottle can be increased instantly, and if the air cannot be exhausted in time, the electric hot water bottle is easy to crack, so that the safety is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the main objective of the present invention is to provide an explosion-proof top cap and an electric hot water bottle having the same, which can exhaust air in time when the internal pressure of the electric hot water bottle increases instantaneously, thereby avoiding the occurrence of the explosion phenomenon caused by the excessive internal pressure.

In order to achieve the above object, according to an aspect of the present invention, there is provided an explosion-proof top cap, comprising an upper cap, a middle cap and a lower cap, which are stacked, wherein a space is provided between the middle cap and the upper cap, and between the middle cap and the lower cap, an exhaust port is provided on the upper cap, a main gas outlet, a first pressure relief port and a second pressure relief port are provided on the middle cap, and a first gas inlet and a second gas inlet are provided on the lower cap; a pressing block is arranged between the middle cover and the lower cover, is positioned below the main air outlet and can move between a first position and a second position; when the pressing block is at the first position, a first ventilation channel is arranged between the pressing block and the middle cover, and the first air inlet, the second air inlet, the first ventilation channel, the main air outlet and/or the first pressure relief opening and the air outlet form an air outlet channel; when the pressing block is at the second position, a second air passage is arranged between the pressing block and the lower cover, and the first air inlet, the second air passage, the second pressure relief opening and/or the first pressure relief opening and the air exhaust opening form a pressure relief passage.

Optionally, a first exhaust space is arranged in the space between the upper cover and the middle cover, and a second exhaust space is arranged in the space between the middle cover and the lower cover; the exhaust port is communicated with the first exhaust space; the first exhaust space and the second exhaust space are communicated through the main air outlet, the first pressure relief port and the second pressure relief port, and the first air inlet and the second air inlet are communicated with the second exhaust space.

Optionally, the lower cover is provided with a groove for accommodating the pressing block; the cross-section of briquetting bottom is leaks hopper-shaped, including the inclined plane, the internal surface of recess for can with the guiding surface of the bottom inclined plane matching of briquetting.

Optionally, the middle cover is provided with an annular blocking wall arranged towards the lower cover, the pressing block is located in the annular blocking wall, and the inner diameter of the annular blocking wall is larger than the outer diameter of the pressing block.

Optionally, the diameter of the main air outlet is greater than the diameter of the first and second pressure relief ports.

Optionally, the middle cover is connected with a pressure relief rubber mat, the pressure relief rubber mat comprises a columnar connecting part, and the connecting part is fixedly connected with the middle cover; the top end of the connecting part is provided with a blocking part which extends outwards horizontally, the blocking part is attached to the upper surface of the middle cover, and the middle cover is covered with the second pressure relief opening.

Optionally, a guide channel arranged towards the upper cover is arranged on the main air outlet, the top of the guide channel is sealed, and an opening for air outlet is formed in the side wall of the guide channel.

Optionally, the number of the first air inlet, the first pressure relief opening, the second pressure relief opening and the air outlet is multiple.

Optionally, the compact is a stainless steel compact.

The utility model discloses another aspect still provides an electric hot water bottle with this explosion-proof top cap, including the kettle body, the top of the kettle body is equipped with the opening, be equipped with above-mentioned explosion-proof top cap on the opening.

According to the technical scheme of the utility model, set up a briquetting in the inside of top cap, can realize the switching of air outlet channel and pressure release passageway according to the position of briquetting. Specifically, when the electric hot water bottle is in an upright state, the pressing block is located at the first position by the self weight of the electric hot water bottle, at the moment, a first ventilation channel (namely the pressing block does not block the main air outlet) is arranged between the top of the pressing block and the main air outlet, and the main air outlet and the first pressure relief opening can exhaust air outwards.

When the electric hot water bottle is in a dumping state, the pressing block is changed along with the dumping position and is moved to the second position, at the moment, a second air passage (namely, the pressing block seals the main air outlet) is arranged between the pressing block and the lower cover, and the first pressure relief opening and the second pressure relief opening can be used for pressure relief and air exhaust.

Among this technical scheme, can realize giving vent to anger among the top cap structure, also can realize exhausting, and no matter give vent to anger under the normal condition, still exhaust when empting, all have two mouths to go on simultaneously, when the pressure of electric hot water bottle inside increases suddenly, can be timely with this partial gas discharge pressure release, and then help avoiding the possibility of explosion.

Drawings

For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:

fig. 1 shows a front view of an explosion proof top cover according to an embodiment of the present invention;

FIG. 2 illustrates a bottom view of an explosion proof top cover in accordance with an embodiment of the present invention;

FIG. 3 shows a cross-sectional view A-A of FIG. 1 in an upright position;

FIG. 4 is an enlarged view of a portion of the compact of FIG. 3;

FIG. 5 shows a cross-sectional view B-B of FIG. 1 in an upright position;

FIG. 6 shows a cross-sectional view A-A of FIG. 1 in the pouring position;

FIG. 7 shows a cross-sectional view B-B of FIG. 1 in the pouring position;

fig. 8 shows a cross-sectional view C-C in the pouring position of fig. 1.

In the figure:

1: an upper cover; 2: a middle cover; 3: a lower cover; 4: briquetting; 5: a first exhaust space; 6: a second exhaust space; 11: an exhaust port; 21: a main air outlet; 22: a first pressure relief port; 23: a second pressure relief vent; 24: a pressure relief rubber mat; 25: a guide channel; 26: an annular barrier wall; 31: a first air inlet; 32: a second air inlet; 33: a groove; 41: an inclined surface; 61: a first vent passage; 62: a second vent passage; 331: a guide surface.

Detailed Description

Referring to fig. 1-8, an embodiment of the present invention provides an explosion-proof top cap, which includes an upper cap 1, a middle cap 2, and a lower cap 3, which are stacked, wherein a space is provided between the middle cap 2 and the upper cap 1, and between the middle cap 2 and the lower cap 3, an exhaust port 11 is provided on the upper cap 1, a main air outlet 21, a first pressure relief port 22, and a second pressure relief port 23 are provided on the middle cap 2, and a first air inlet 31 and a second air inlet 32 are provided on the lower cap 3; a pressing block 4 is arranged between the middle cover 2 and the lower cover 3, the pressing block 4 is positioned below the main air outlet 21, and the pressing block 4 can move between a first position and a second position; the first position is close to the lower cover, and the second position is close to the middle cover; when the pressing block 4 is at the first position, a first ventilation channel 61 is arranged between the pressing block 4 and the middle cover 2, so that the first air inlet 31, the second air inlet 32, the first ventilation channel 61, the main air outlet 21 and/or the first pressure relief opening 22, and the air outlet 11 form an air outlet channel; when the pressing block 4 is at the second position, a second vent channel 62 is formed between the pressing block 4 and the lower cover 3, and the first air inlet 31, the second air inlet 32, the second vent channel 62, the second pressure relief opening 23 and/or the first pressure relief opening 22 and the exhaust opening 11 form a pressure relief channel.

In this embodiment, a pressing block structure is provided inside the top cover, and the first ventilation channel 61 and the second ventilation channel 62 can be switched by using the pressing block 4. When the electric hot water bottle is normally placed, the top cover is in a horizontal state, the pressing block 4 inside the electric hot water bottle is attached to the surface of the lower cover 3 by means of the gravity of the pressing block, the first ventilation channel 61 is connected, and the top cover can provide normal exhaust operation. In the exhaust process, two exhaust modes are included, as shown in fig. 3, the main exhaust is composed of a first air inlet 31, a second air inlet 32, a first ventilation channel 61, a main air outlet 21 and an exhaust port 11; as shown in fig. 5, the auxiliary exhaust is constituted by the first intake port 31, the second intake port 32, the first ventilation passage 61, the first relief port 22, and the exhaust port 11.

When the electric hot water bottle topples, the top cover is also inclined (in a non-water bottle state), the position of the pressing block 4 in the electric hot water bottle is changed, namely the pressing block 4 is in the second position and is in contact with the lower surface of the middle cover 2 and blocks the main air outlet 21, wherein the upper surface of the pressing block 4 is of a plane structure, the area of the upper surface is larger than that of the main air outlet 21, and when the electric hot water bottle topples, the pressing block 4 can be ensured to block the main air outlet 21. At this time, the second exhaust passage is connected, and the top cover can perform the pressure relief operation. In the pressure relief process, two pressure relief modes are included, as shown in fig. 6, the main pressure relief is composed of a first air inlet 31, a second air inlet 32, a second vent channel 62, a second pressure relief port 23 and an exhaust port 11; as shown in fig. 7, the auxiliary relief is constituted by the first intake port 31, the second intake port 32, the second vent passage 62, the first relief port 22, and the exhaust port 11.

The pressing block 4 of the explosion-proof top cover is a stainless steel pressing block which has a certain dead weight, when the electric thermos bottle is normally placed, the electric thermos bottle is inevitably in a first position due to the dead weight of the pressing block 4, preferably, as shown in fig. 4, in order to limit the pressing block 4 in the first position and ensure that the pressing block 4 can stay at a correct position, the lower cover 3 is provided with a groove 33 for accommodating the pressing block 4; the interface at the bottom of the pressing block 4 is funnel-shaped and comprises an inclined surface 41, and the inner surface of the groove 33 is a guide surface 331 which can be matched with the inclined surface 41 at the bottom of the pressing block 4; the middle cover 2 is provided with an annular blocking wall 26 which is arranged towards the direction of the lower cover 3, the pressing block is positioned in the annular blocking wall 26, and the inner diameter of the annular blocking wall 26 is larger than the outer diameter of the pressing block 4. When the explosion-proof top cover is in a horizontal state, the inclined surface 41 at the bottom of the pressing block 4 is in contact with the inner surface of the groove 33, the inner surface of the groove 33 is a guide surface 331 which has a guide effect on the pressing block 4, so that the pressing block 4 can smoothly enter the groove 33; the inner diameter of the annular blocking wall 26 is larger, a certain gap is formed between the annular blocking wall and the pressing block 4 to ensure steam circulation, and the annular blocking wall has a certain limiting effect on the pressing block 4 in the horizontal direction to prevent the pressing block 4 from deviating in the horizontal direction; the position of the pressure piece 4 is effectively limited by the recess 33 and the annular stop wall 26, so that it can be moved in the correct position.

When the electric thermos bottle topples over, the pressing block 4 cannot be determined to be necessarily located at the second position, and may be located between the first position and the second position, when the pressing block 4 is located at the second position, the first vent channel 61 and the second vent channel 62 are both in a communicated state, and at the moment, the first pressure relief opening 22, the main air outlet 21 and the second pressure relief opening 23 can be used for pressure relief and air exhaust, so that explosion can be avoided.

When the electric thermos bottle is used, because the inside of the electric thermos bottle is high-temperature hot water, the internal pressure is instantly increased at the moment of pouring, and the main purpose is to discharge the part of the instantly increased air pressure when the electric thermos bottle is subjected to pressure relief operation; the pressure relief structure sets up on the top cap (the structure at the topmost of electric hot water bottle), can not have water to plug up the first air inlet 31 and/or the second air inlet 32 that are located the top cap in the twinkling of an eye toppling over, consequently, can guarantee that the pressure relief operation is accomplished smoothly, even if finally (the electric hot water bottle topples over the back) water shutoff first air inlet 31 and second air inlet 32, at this moment, the pressure relief operation has been accomplished, still can not take place the phenomenon of explosion.

In a preferred embodiment of the present invention, independent spaces are provided between the middle cover 2 and the upper cover 1 and the lower cover 3 for air exhaust and pressure relief operations, that is, a first exhaust space 5 is provided in the space between the upper cover 1 and the middle cover 2, and a second exhaust space 6 is provided in the space between the middle cover 2 and the lower cover 3; the exhaust port 11 communicates with the first exhaust space 5; the first exhaust space 5 and the second exhaust space 6 are communicated through the main air outlet 21, the first relief port 22 and the second relief port 23, and the first air inlet 31 and the second air inlet 32 are communicated with the second exhaust space 6. In the inside of top cap, still need set up if controlling structures such as panel, consequently, set up out independent exhaust, pressure release space, have certain guide effect to steam, avoid influencing the normal use of other parts.

Preferably, the diameter of the main air outlet 21 is larger than the diameter of the first and second

pressure relief ports

22 and 23. The number of the first intake ports 31, the first relief ports 22, the second relief ports 23, and the exhaust ports 11 is plural. The main outlet 21 serves as the main outlet channel through which most of the steam is discharged, while the first and second

pressure relief ports

22 and 23 primarily discharge the steam in a permeating manner and have relatively small diameters.

In a preferred embodiment of the present invention, as shown in fig. 8, a pressure relief rubber pad 24 is connected to the middle cap 2, the pressure relief rubber pad 24 includes a columnar connecting portion, and the connecting portion is fixedly connected to the middle cap 2; the top of connecting portion is equipped with outside horizontally extending's fender portion, and the fender portion of keeping off is laminated with the upper surface of well lid 2 mutually, and the second pressure release mouth 23 on the lid 2 in the closing cap. When toppling over the state, when carrying out the pressure release operation, if pressure is great in the twinkling of an eye, high temperature hot water blowout's phenomenon can appear, consequently, sets up pressure release cushion 24 in second pressure release mouth 23 (this mouth is main pressure release mouth, is located exhaust 11 below), during the pressure release, blows the portion of blocking up through pressure earlier, exhausts through second pressure release mouth 23, the effectual hot water direct injection's of avoiding of portion of blocking up phenomenon. Similarly, a guide channel 25 is arranged on the main air outlet 21 and faces the upper cover 1, the top of the guide channel 25 is closed, and an opening for air outlet is arranged on the side wall of the guide channel 25. The mode of side opening is adopted, the normal operation of exhaust cannot be influenced, and meanwhile, hot water direct injection can be avoided.

The embodiment of the utility model provides an on the other hand still provides an electric hot water bottle with this explosion-proof top cap, including the kettle body, the top of the kettle body is equipped with the opening, is equipped with above-mentioned explosion-proof top cap on the opening. The rotating shaft is arranged on the explosion-proof top cover, the rotating shaft explosion-proof top cover and the kettle body are connected into a whole to form the electric kettle, when the electric kettle is used, if the phenomenon of dumping occurs, the internal pressure can be smoothly discharged by using the pressure relief channel in the moment of dumping, the explosion situation is avoided, and the electric kettle is safer and more reliable in use.

The above detailed description does not limit the scope of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof top cap, includes upper cover (1), well lid (2) and lower cover (3) that the stack set up, well lid (2) with upper cover (1) and be equipped with interval, its characterized in that between lower cover (3):

an exhaust port (11) is arranged on the upper cover (1), a main air outlet (21), a first pressure relief port (22) and a second pressure relief port (23) are arranged on the middle cover (2), and a first air inlet (31) and a second air inlet (32) are arranged on the lower cover (3);

a pressing block (4) is arranged between the middle cover (2) and the lower cover (3), and the pressing block (4) is positioned below the main air outlet (21) and can move between a first position and a second position; wherein:

when the pressing block (4) is at a first position, a first ventilation channel (61) is arranged between the pressing block (4) and the middle cover (2), and the first air inlet (31), the second air inlet (32), the first ventilation channel (61), the main air outlet (21) and/or the first pressure relief opening (22), and the air outlet (11) form an air outlet channel;

when the pressing block (4) is at the second position, a second air passage (62) is arranged between the pressing block (4) and the lower cover (3), the first air inlet (31), the second air inlet (32), the second air passage (62), the second pressure relief opening (23) and/or the first pressure relief opening (22) are/is formed, and the air outlet (11) forms a pressure relief passage.

2. Explosion proof roof according to claim 1, characterized in that a first exhaust space (5) is provided in the space between the upper cover (1) and the middle cover (2), and a second exhaust space (6) is provided in the space between the middle cover (2) and the lower cover (3);

the exhaust port (11) is communicated with the first exhaust space (5); the first exhaust space (5) and the second exhaust space (6) are communicated through the main air outlet (21), the first pressure relief port (22) and the second pressure relief port (23), and the first air inlet (31) and the second air inlet (32) are communicated with the second exhaust space (6).

3. Explosion-proof roof according to claim 1, characterized in that the lower cover (3) is provided with a groove (33) for accommodating the pressure block (4);

the cross-section of briquetting (4) bottom is hourglass hopper-shaped, including inclined plane (41), the internal surface of recess (33) be can with guide surface (331) that the bottom inclined plane (41) of briquetting (4) match.

4. Explosion vent cover according to claim 3, characterized in that an annular blocking wall (26) is provided on the middle cover (2) and is oriented towards the lower cover (3), the pressure block (4) is located in the annular blocking wall (26), and the inner diameter of the annular blocking wall (26) is larger than the outer diameter of the pressure block (4).

5. Explosion proof cover according to claim 1, characterized in that the diameter of the main air outlet (21) is larger than the diameter of the first pressure relief opening (22) and the second pressure relief opening (23).

6. The explosion-proof top cover according to claim 1, characterized in that the middle cover (2) is connected with a pressure relief rubber mat (24), the pressure relief rubber mat (24) comprises a columnar connecting part, and the connecting part is fixedly connected with the middle cover (2);

the top of connecting portion is equipped with outside horizontally extending's fender portion, keep off the portion with the upper surface of well lid (2) is laminated mutually, and the closing cap on well lid (2) second pressure release mouth (23).

7. An explosion-proof roof cover according to claim 1, characterized in that the main air outlet (21) is provided with a guide channel (25) arranged towards the upper cover (1), the top of the guide channel (25) is closed, and the side wall is provided with an opening for air outlet.

8. Explosion proof cover according to claim 1, characterized in that the number of said first air inlet (31), said first pressure relief opening (22), said second pressure relief opening (23) and said air outlet (11) is plural.

9. Explosion proof roof according to claim 1, characterized in that the pressure block (4) is a stainless steel pressure block.

10. An electric thermos bottle with the explosion-proof top cover is characterized by comprising a bottle body, wherein the top of the bottle body is provided with an opening, and the opening is provided with the explosion-proof top cover according to any one of claims 1-9.